Reverse DNS issues (Can't send emails to some reciepient)

[davy2k]

Dear All,
We have a customer that has a problem sending email to certain recipients. We determined that the reason for the failure is the lack of reverse DNS record. Basically we need


Unfortunately the customers ISP refuse to create a reverse DNS entry for us that would solve the problem. (They insist instead that the entire company buy a hosted email solution instead).

Please any suggestion as to how to circumvent this is welcomed.

Thank you for your help

 

[58sniper]

The RFC says you have to have a reverse DNS. If the ISP won't change it, time to switch providers.

Pat Richard MVP
Plan for performance, and capacity takes care of itself. Plan for capacity, and suffer poor performance.

http://www.ucblogs.net/blogs/exchange/

 

[NetworkTek]

Yeah I second change ISP's. That is rediculous.

Network+
Inet+
MCP
MCSA 2003
MCTS

 

[ShackDaddy]

Instead of getting an RDNS record created, you could also start using a smarthost to send outbound mail. Ask the ISP what their smarthost address is and find out if they charge for using it. Most ISPs don't. But if they do, find someone else to purchase the service from, even if you don't change ISPs.

There are lots of places to purchase a smarthost relaying service from. I know that DynDNS has a MailHop relay service that I use for some clients, and I also have used DNSExit.com for this. Normally though I set up all my clients with hosted anti-spam solutions that include outbound smarthost, and I use that for the outbound sending. In my case, I use MXLogic\McAfee, but other people use Reflexions, ExchangeDefender, and other services.

Dave Shackelford MVP
ThirdTier.net
TrainSignal.com

 

[davy2k]

thank you all for your advice the company has decided to go with another provider...